-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+dnl Checks for --enable-coverage and updates CFLAGS and LDFLAGS appropriately.
+AC_DEFUN([OVS_CHECK_COVERAGE],
+ [AC_REQUIRE([AC_PROG_CC])
+ AC_ARG_ENABLE(
+ [coverage],
+ [AC_HELP_STRING([--enable-coverage],
+ [Enable gcov coverage tool.])],
+ [case "${enableval}" in
+ (lcov) coverage=true lcov=true ;;
+ (yes) coverage=true lcov=false ;;
+ (no) coverage=false lcov=false ;;
+ (*) AC_MSG_ERROR([bad value ${enableval} for --enable-coverage]) ;;
+ esac],
+ [coverage=false lcov=false])
+ if $coverage; then
+ CFLAGS="$CFLAGS -O0 --coverage"
+ LDFLAGS="$LDFLAGS --coverage"
+ fi
+ if $lcov; then
+ if lcov --version >/dev/null 2>&1; then :; else
+ AC_MSG_ERROR([--enable-coverage=lcov was specified but lcov is not in \$PATH])
+ fi
+ fi
+ AC_SUBST([LCOV], [$lcov])])